Hi, back again. I'm getting a bit further. I've attempted to configure the network settings in the Samsung to connect to the BT home hub and I seem to be able to get a connection between the Samsung and the hub OK - there's a good signal strength and the graphics indicate that the this connection has been successful. But when the hub then tries to connect to the internet it fails (a red cross appears on the link). It says "Check the DNS setting from the network setting and contact your ISP. When I look at the DNS setting on the Samsung it's all set to 0.0.0.0, so I guess this is the problem. I've talked to the BT Indian help line on this and they are absolutely clueless (I know more than they do, which indicates how clueless they are).
I'm assuming that the BT home hub can support both the PC (attached via an ethernet cable) and a wireless connection to the PVR (though, I guess, not at the same time). Another thing that confuses me is that I thought the connection between the Samsung PVR and the BT home hub would be nothing to do with the PC, but when I looked on the PC it "knows" about the PVR now, so I guess the home hub has sent it this data. Is there anythingI need to enable on the PC to get this link working? None of instruction manuals I have is any use at all.